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CVE-2023-38500

CVE-2023-38500 · By-passing Cross-Site Scripting Protection in HTML Sanitizer

This page contains facts from public vulnerability sources. Check the original advisory before updating.

TYPO3 HTML Sanitizer is an HTML sanitizer, written in PHP, aiming to provide cross-site-scripting-safe markup based on explicitly allowed tags, attributes and values. Starting in version 1.0.0 and prior to versions 1.5.1 and 2.1.2, due to an encoding issue in the serialization layer, malicious markup nested in a `noscript` element was not encoded correctly. `noscript` is disabled in the default configuration, but might have been enabled in custom scenarios. This allows bypassing the cross-site scripting mechanism of TYPO3 HTML Sanitizer. Versions 1.5.1 and 2.1.2 fix the problem.

CVSS 4.7 · Medium · EPSS 0.5% · Fix available

Published
Updated

Stack: php

Affected products and versions

  • html-sanitizer

    Versions
    • >= 1.0.0, < 1.5.1: Affected
    • >= 2.0.0, < 2.1.2: Affected

    No fix published

  • typo3/html-sanitizer Packagist

    Versions
    • v1.0.0
    • v1.0.1
    • v1.0.2
    • v1.0.3
    • v1.0.4
    • v1.0.5
    • v1.0.6
    • v1.0.7
    • v1.5.0
    Affected ranges
    • ECOSYSTEM: ≥ 1.0.0, < 1.5.1

    Update to 1.5.1

  • typo3/html-sanitizer Packagist

    Versions
    • v2.0.0
    • v2.0.1
    • v2.0.10
    • v2.0.11
    • v2.0.12
    • v2.0.13
    • v2.0.14
    • v2.0.15
    • v2.0.16
    • v2.0.2
    • v2.0.3
    • v2.0.4
    • v2.0.5
    • v2.0.6
    • v2.0.7
    • v2.0.8
    • v2.0.9
    • v2.1.0
    • v2.1.1
    Affected ranges
    • ECOSYSTEM: ≥ 2.0.0, < 2.1.2

    Update to 2.1.2

Original sources

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